Stackable packaging unit



FIG. 1 is a top perspective view of a stackable packaging unit showing my new design, the container shown in broken lines for illustrative purposes only;

FIG. 2 is a side elevational view thereof, the opposite side being identical and the fragmented container shown in broken lines for illustrative purposes only;

FIG. 3 is a rear elevational view thereof, the front being identical and the fragmented container shown in broken lines for illustrative purposes only;

FIG. 4 is a top plan view thereof;

FIG. 5 is a fragmentary enlarged sectional view of FIG. 4 taken in the direction of arrows 5--5.

FIG. 6 is a fragmentary enlarged sectional view of FIG. 4 taken in the direction of arrows 6--6. 

The ornamental design for a stackable packaging unit, as shown and described. 